VEGA VEGASON 51V…53V - Manual (Page 63)

VEGASON 51 V … 53 V 63
Lin.
kurve
Linear
Integr
ations
zeit
0 s
Ab-
gleich Aus-
wer-
tung
Skalie
rung
8.) Useful and noise level
In the menu
you get an important information via the sig-
nal quality of the product echo.
The higher the amount out of "
Ampl." minus
" S-N", the more reliable is the measurement.
Ampl.: Means amplitude of the level echo
in dB (useful level)
S-N: Means Signal-Noise, i.e. the level of
the background noise (noise level)
The larger the distance of the amplitude
(Ampl.) to the noise level (S-N), the better is
your measurement:
> 18 dB
Meeasurement very good
18 … 13 dB Measurement good
13 … 8 dB Measurement satisfactory
8 … 5 dB Measurement sufficient
< 5 dB Measurement very bad
Example:
Ampl. = 68 dB S-N = 53 dB
68 dB – 53 dB = 15 dB
With 15 dB signal distance there is a high
reliability.
9. Conditioning / Scaling of the sensor
display
The menu point "Conditioning" in the
MINICOM-menu only relates to the
SENSOR-display and will be overwritten
by the adjustments in the signal condi
tioning instrument.
Menu plan page 70
Ampl.:
XX dB
S-N:
XX dB
Set-up - Adjustment with VEGAMET or MINICOM
Linearisation:
A linear dependence between the percent-
age value of the level distance and the per-
centage value of the filling volume is
preadjusted.
You can choose in the menu "Lin.curve" be-
tween linear, cylindrical tank and spherical
tank. The adjustment of an own linearisation
curve is only possible with the PC and the
adjustment program VVO (see page 48).
6. Outputs
Under the menu " Outputs" you determine if
e.g. the current output should be inverted or
which parameter should be provided by the
sensor indication.
7.) False echo storage
A false echo storage is always useful when
false echo sources such as e.g. struts must
be reduced. With the creation of a false echo
storage you cause the sensor electronics to
note the false echoes and to save them in an
internal database. The sensor electronics
treats these (false) echoes differently than
the useful echo and gates them out.